The first time I learned lovingkindness meditation, or metta, I was at a weekend retreat a couple of hours away from my house. As I drove home, I sent the standard wishes to the other drivers -- May you be safe, may you be happy, may you be healthy, may you live with ease -- indiscriminately, whether they sped by me or poked along so that I had to pass them, whether they sat in a lane or cut in and out of traffic.